Crop protection

Biobest:

"Keep on top of whitefly by deploying Eretmocerus-System as temperatures soar"

Getting good control of whiteflies can prove more challenging at higher temperatures. In a wide range of crops - from roses and poinsettias to tomatoes and sweet peppers -…

Jamie Aalbers

Dipping poinsettia cuttings to reduce whitefly 101

Although there's been talk for years in Canada about dipping your poinsettia cuttings in low-risk pesticides, some growers have yet to take the plunge. This preventive technique improves efficacy of both biocontrol and pesticide programs for Bemisia, since it lowers your starting pest pressure. If you’re…

First record of Septoria rudbeckiae on Rudbeckia in the United Kingdom

Species of Rudbeckia, often known as black-eyed Susan or coneflower, are used as bedding plants in UK gardens. The large, daisy-like flowerheads typically have bright yellow petals and a conspicuous black centre which may be raised into a cone shape. During the summer of 2016, Rudbeckia fulgida var.…

Tuesday, July 28, 11:30 a.m. Eastern

HRI Coffee Chat: FNRI research on IPM Strategies for invasive insects

On July 28, HRI will organize a live Q&A session with FNRI researchers Dr. Cindy McKenzie and Dr. Lance Osborne. "Get your coffee and your questions ready and sit down to a…

"The use of disinfectant also has some drawbacks"

It is almost time for growers to rotate their crops, which goes hand in hand with a big clean-up of their greenhouses. That is why the industry is giving out several messages with tips and advice, including the use of disinfectants to combat mould and viruses. Unfortunately, these practices are not…

York University

York University study:

"About 94 per cent of wild bee and native plant species networks lost"

Climate change and an increase in disturbed bee habitats from expanding agriculture and development in northeastern North America over the last 30 years are likely responsible for a 94 per cent loss of plant-pollinator networks, researchers found. The paper, “Wild bee declines linked to plant-pollinator…

Italy: The effects of Helkon Ionized Water on olive trees infected by Xylella Fastidiosa

How do olive trees infected by Xylella Fastidiosa respond to the eco-friendly water ionization technology of HELKON Fluid Treatment Systems. In a case study, it was shown that after treatment, the trees responded positively to the treatment showing a energetic state and vital energy. They observed a good…

Practical advice for managing a multicultural workforce

How to be an inclusive employer

Working with multicultural staff is very common in the horticulture industry. Even though you all speak English or the same language, there can still be a lot of miscommunication. So, how to manage it? In a webinar held on July 14 and organized by Bayer, practical advice for managing a multicultural workforce was provided by…

webinar, July 16

Control, eradication and preparedness for exotic leafminers in Australia

Production nurseries are encouraged to attend a webinar on exotic leafminers that will be held on Thursday, 16 July 2020, to provide growers with an update on incursion risk,…

GIA

Australia: Close encounter with Asian gypsy moth

The Head of Biosecurity at the Department of Agriculture, Water and the Environment (DAWE), Lyn O’Connell, reminded the country of the threat posed by sailing vessels to national biosecurity this week. “Around 500 non-commercial boats/yachts and 19,000 commercial vessels arrive in Australia each year and…

Home Grown

British grower manages pests naturally using IPM

In its large scale production of ornamental plants, Lovania Nurseries uses Integrated Pest Management (IPM), managing pests naturally, which is a bio-friendly approach to growing that focuses on managing insects, weeds and disease through a combination of cultural, physical, biological and chemical…

Australia: New minor use pesticide & fungicide permits issued

PER89330 - Greenlife Industry Australia has applied for and been issued with the Emergency Use Permit (PER89330) for the management of Fall armyworm in ‘NURSERY STOCK…

Flowers Canada Growers

Rimon approved for use on greenhouse ornamentals in Canada

Flowers Canada Growers announced that Rimon 10EC (novaluron) has very recently been approved for use on greenhouse and outdoor ornamental crops for suppression of whiteflies…

Ryan Hodnett

CAN (ON): Japanese beetles have started to emerge

Japanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario. Look for these shiny green and copper beetles feeding on grape leaves, roses and…

Basil downy mildew detected in New Jersey

Downy mildew of basil (caused by the oomycete Peronospora belbahrii) was observed on greenhouse-grown plants for sale at a large retail operation in New Jersey last week. As the spores (sporangia) of P. belbahrii may spread long distances on air currents, producers, retailers, and home gardeners in the…

UC Davis

US (CA): UC IPM Pest Management Guidelines Floriculture and Ornamental Nurseries

These guidelines represent the best information currently available to the authors and are intended to help you in making the best choices for an IPM program. Not all…

from UF/IFAS Extension Greenhouse Training Online:

New videos on 1 to 5 moisture scale for container substrates

Communication on when and how much to irrigate is critical in the production of high quality, uniform plants. The University of Florida IFAS Extension has developed short and simple videos in English and Spanish (“The 1 to 5 Moisture Scale for Container Substrates” / “La Escala de Humedad de 1 a 5 para…

Alternaria leaf spot caused by alternaria species: An emerging problem on ornamental plants in Italy

Serious outbreaks of Alternaria leaf spot and plant decay have recently been recorded on several ornamental plants in the Biella Province (Northern Italy). Twenty-two fungal…

ONfloriculture

Is your water a source of plant disease?

After reading the previous posts in this series, you’re now aware of which pathogens can be spread through your irrigation water, where they can accumulate, and why that’s important. We’re now moving on to posts covering what you can do about it. This post will walk you through how to sample water…

A plant pathologist’s view

Growing impatiens more safely

One important lesson that we’ve learned together as an industry is how to manage bacterial blight disease of geraniums. We’ve figured out that exquisitely careful sanitation procedures are critical at the upper levels of production, with constant checking for any breaches in safety measures. We’ve learned that growers should…

Howard F. Schwartz, Colorado State University, Bugwood.org

VdNPS, a nonribosomal peptide synthetase, is involved in regulating virulence in Verticillium dahliae

Nonribosomal peptide synthetases (NPS) are known for the biosynthesis of antibiotics, toxins, and siderophore production. They are also a virulence determinant in different phytopathogens. However, until now, the functional characterization of NPS in Verticillium dahliae has not been reported. Deletion…

Garden Mums – 2020 production and protection tips

Summer is in full swing, and so too are garden mums. Although generally an easy crop, there are several tweaks you can make to help save headaches and money. This post has information to help you optimize your irrigation, fertilizer and pest management programs in garden mums. This post was contributed…

Mastering monitoring tools for improved Thrips control

As more growers around the world face Thrips (Order: Thysanoptera) and the crop challenges they bring, information and understanding have never been more important. Unnoticed Thrips challenges pose a significant threat to growers as their populations can quickly balloon, impacting on crop production,…

Bayer

Bayer pays over $10 billion in Roundup settlement

Bayer announced a series of agreements that will substantially resolve major outstanding Monsanto litigation, including U.S. Roundup product liability litigation, dicamba drift litigation and PCB water litigation. The main feature is the U.S. Roundup resolution that will bring closure to approximately…

Part 2

Combating root-knot nematodes in daylilies: Experimental results

In the previous Michigan State University Extension article, “Combating root-knot nematodes in daylilies: Experimental results – Part 1,” the team of MSU explored pre-plant dipping practices to best control northern root knot nematodes (Meloidogyne hapla). To recap, northern root knot nematodes are…

US (MI): How to identify and manage common groundsel in nurseries and greenhouses

Weed control is an important factor to consider for improving ornamental production in container nurseries and greenhouse operations. Growers can spend thousands of dollars controlling weeds and some broadleaf weeds, such as common groundsel (Senecio vulgaris), being extremely problematic and difficult to…

Friendly fungi benefits 80% of all plant species

Mycorrhizae are beneficial soil organisms used in all kinds of horticulture to help maximize plant performance. The company Mycorrhizal Applications produces and researches commercial mycorrhizae. The company has 25 years of experience helping growers of all kinds adopt this symbiotic technology.  With all…

Australia: New QDAF-led pest and disease webinars

Growers and production staff are invited to attend a series of pest and disease webinars run by the Queensland Department of Agriculture and Fisheries (QDAF). These online events aim to enhance the Australian nursery industry’s biosecurity measures by showcasing new pest and disease contingency plans and…

Tyfu Cymru

IPM webinar for commercial ornamental growers in Wales

On June 23, a webinar will be held with David Talbot from ADAS on Integrated Pest Management for commercial ornamental growers in Wales. Click here for more information and to register.

Bioinsecticide recognized with EPA green challenge chemistry award

Vestaron Corporation’s bioinsecticide SPEAR has earned recognition from the Environmental Protection Agency via its Green Chemistry Challenge Awards Program.  Since 1996, the EPA…

Agdia commercializes molecular assay for detection of Tobacco rattle virus

Agdia, Inc. (Elkhart, IN) has commercialized a rapid and user-friendly, RNA-based assay, on their AmplifyRP® XRT platform, for the detection and identification of Tobacco rattle virus (TRV). Figure 1. TRV on tuber Tobacco rattle virus (Tobravirus) is globally distributed and has a wide, ever-expanding…

Future challenges to plant protection product availability in Australia

Hort Innovation have been funding a multi-industry project MT17019 – Regulatory Support & Coordination, focused on issues relating to chemical access for horticultural industries. The project is managed by a nationally recognised expert on pesticide regulation and risk assessment. Kevin has more than 35…

Kristin Poley

In-field treatments to control root-knot nematodes in bare-root daylily production

A previous Michigan State University Extension article, “Combating root-knot nematodes in daylilies: Experimental results – Part 1,” explored pre-plant dipping practices to best control northern root knot nematodes (Meloidogyne hapla). To recap, northern root knot nematodes are detrimental to many crops…

1346 tonnes - Global operation Silver Axe

Record number of illegal pesticides taken off the market in 2020

Europol coordinated the fifth edition of operation Silver Axe which saw twice the amount of illegal products seized compared to last year’s operation. The yearly law enforcement operation, which targets the counterfeit and illicit trade of pesticides, took place between 13 January and 25 April and…

Viruses in irrigation water

The conversation and discussion on the topic of viruses has now become more pertinent than ever, not only in human health, but also in the vegetable cultivation sector. Diseases caused by the Cucumber Green Mottle Mosaic Virus (CGMMV) has been plaguing the Dutch cucumber cultivation sector for years and it also seems like the…

USDA APHIS

Ralstonia eradicated from U.S. greenhouses

The United States Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and its State partners have successfully completed actions to eliminate Ralstonia solanacearum race 3 biovar 2 from U.S. greenhouses. This announcement comes just two months after the pathogen was first…

Scarab Solutions

Humans still vital: The state of AI image analysis for crop pest and disease management

Technological advancements in pest and disease scouting are transforming a labor-intensive sector into a more efficient, data-driven version of itself. Now, as artificial intelligence (AI) is beginning to be developed to aid crop production, growers must be more critical than ever in assessing the…

Australia: Implementing effective IPM using BioSecure HACCP procedures

The levy funded ‘Improving pest management for the nursery industry’ (NY17009) project has moved into the second phase, seeking to perform a cost benefit analysis on the implementation of elements of an Integrated Pest Management (IPM) program in production nurseries. The project team at Greenlife…

Putting the grower first in crop protection

The goal of a Texas based horticultural technology start up is to help the world thrive with healthier harvests, and to help growers reach that goal John Appel, president of Verano365, and Dave Coorts, technical director, talk about their products, and how they complement each other. Several new products…

New dates for International Plant Health Conference

The government of Finland has confirmed the arrangements for the International Plant Health Conference (IPHC). The IPHC will take place in Helsinki, Finland, at the Paasitorni conference centre, from June 28 to July 1, 2021.  Further updates can be found on the International Year of Plant Health website and…

Successful detailed tracking of major plant disease's global spread

Agricultural Research Service (ARS) scientists and their Oregon State University (OSU) collaborators have developed a new, highly detailed genetic way to trace the spread of Agrobacterium, one of the world's most important bacterial plant pathogens, according to research just published in Science.…

Controlling aphids with Eupeodes-System

Growers of protected vegetables, fruit and ornamental crops have a new weapon against aphids. Biobest launches the Eupeodes-System from the beginning of June. The hoverfly Eupeodes corollae boosts aphid control. “With the increasing loss of chemical crop protection products, Eupeodes-System is set to…

MPI New Zealand

Understanding the symptom development and latent period of myrtle rust

Myrtle rust fungus (Austropuccinia psidii) was first reported in New Zealand in 2017 and has already established itself in warmer northern regions. Native species such as ramarama and rōhutu are particularly vulnerable to the disease, with young, expanding foliage showing the first signs of infection.…

ONfloriculture

CAN (ON): New chemical control option for thrips and whitefly

A new pesticide is available for greenhouse ornamental production in Canada that has shown potential for effective suppression of difficult-to-control thrips and whitefly species. But to keep this new tool effective, growers will have to use this chemical wisely. Be sure to check out this article by…

Levy Communications

June Pest of the Month: Grey mould

At yourlevyatwork.com.au the Pest of the Month June is Grey mould (Botrytis). In this article, they describe the symptoms, what the best conditions are to develop and the host range.  Symptoms include:Blights, spots, blotches, wilts, cankers, rots, damping off and storage diseases. Usually the softer tissues…


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